/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// Quake is a trademark of Id Software, Inc., (c) 1996 Id Software, Inc. All
// rights reserved.

#include <windows.h>
#include "quakedef.h"

extern	HWND	mainwindow;

static qboolean cdValid = false;
static qboolean	playing = false;
static qboolean	wasPlaying = false;
static qboolean	initialized = false;
static qboolean	enabled = false;
static qboolean playLooping = false;
static float	cdvolume;
static byte 	remap[100];
static byte		playTrack;
static byte		maxTrack;

UINT	wDeviceID;


static void CDAudio_Eject(void)
{
    DWORD	dwReturn;

    if (dwReturn = mciSendCommand(wDeviceID, MCI_SET, MCI_SET_DOOR_OPEN, (DWORD)NULL))
    {
        Con_DPrintf("MCI_SET_DOOR_OPEN failed (%i)\n", dwReturn);
    }
}


static void CDAudio_CloseDoor(void)
{
    DWORD	dwReturn;

    if (dwReturn = mciSendCommand(wDeviceID, MCI_SET, MCI_SET_DOOR_CLOSED, (DWORD)NULL))
    {
        Con_DPrintf("MCI_SET_DOOR_CLOSED failed (%i)\n", dwReturn);
    }
}


static int CDAudio_GetAudioDiskInfo(void)
{
    DWORD				dwReturn;
    MCI_STATUS_PARMS	mciStatusParms;


    cdValid = false;

    mciStatusParms.dwItem = MCI_STATUS_READY;
    dwReturn = mciSendCommand(wDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_WAIT, (DWORD) (LPVOID) &mciStatusParms);
    if (dwReturn)
    {
        Con_DPrintf("CDAudio: drive ready test - get status failed\n");
        return -1;
    }
    if (!mciStatusParms.dwReturn)
    {
        Con_DPrintf("CDAudio: drive not ready\n");
        return -1;
    }

    mciStatusParms.dwItem = MCI_STATUS_NUMBER_OF_TRACKS;
    dwReturn = mciSendCommand(wDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_WAIT, (DWORD) (LPVOID) &mciStatusParms);
    if (dwReturn)
    {
        Con_DPrintf("CDAudio: get tracks - status failed\n");
        return -1;
    }
    if (mciStatusParms.dwReturn < 1)
    {
        Con_DPrintf("CDAudio: no music tracks\n");
        return -1;
    }

    cdValid = true;
    maxTrack = mciStatusParms.dwReturn;

    return 0;
}


void CDAudio_Play(byte track, qboolean looping)
{
    DWORD				dwReturn;
    MCI_PLAY_PARMS		mciPlayParms;
    MCI_STATUS_PARMS	mciStatusParms;

    if (!enabled)
        return;

    if (!cdValid)
    {
        CDAudio_GetAudioDiskInfo();
        if (!cdValid)
            return;
    }

    track = remap[track];

    if (track < 1 || track > maxTrack)
    {
        Con_DPrintf("CDAudio: Bad track number %u.\n", track);
        return;
    }

    // don't try to play a non-audio track
    mciStatusParms.dwItem = MCI_CDA_STATUS_TYPE_TRACK;
    mciStatusParms.dwTrack = track;
    dwReturn = mciSendCommand(wDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT, (DWORD) (LPVOID) &mciStatusParms);
    if (dwReturn)
    {
        Con_DPrintf("MCI_STATUS failed (%i)\n", dwReturn);
        return;
    }
    if (mciStatusParms.dwReturn != MCI_CDA_TRACK_AUDIO)
    {
        Con_Printf("CDAudio: track %i is not audio\n", track);
        return;
    }

    // get the length of the track to be played
    mciStatusParms.dwItem = MCI_STATUS_LENGTH;
    mciStatusParms.dwTrack = track;
    dwReturn = mciSendCommand(wDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT, (DWORD) (LPVOID) &mciStatusParms);
    if (dwReturn)
    {
        Con_DPrintf("MCI_STATUS failed (%i)\n", dwReturn);
        return;
    }

    if (playing)
    {
        if (playTrack == track)
            return;
        CDAudio_Stop();
    }

    mciPlayParms.dwFrom = MCI_MAKE_TMSF(track, 0, 0, 0);
    mciPlayParms.dwTo = (mciStatusParms.dwReturn << 8) | track;
    mciPlayParms.dwCallback = (DWORD)mainwindow;
    dwReturn = mciSendCommand(wDeviceID, MCI_PLAY, MCI_NOTIFY | MCI_FROM | MCI_TO, (DWORD)(LPVOID) &mciPlayParms);
    if (dwReturn)
    {
        Con_DPrintf("CDAudio: MCI_PLAY failed (%i)\n", dwReturn);
        return;
    }

    playLooping = looping;
    playTrack = track;
    playing = true;

    if (cdvolume == 0.0)
        CDAudio_Pause ();
}


void CDAudio_Stop(void)
{
    DWORD	dwReturn;

    if (!enabled)
        return;

    if (!playing)
        return;

    if (dwReturn = mciSendCommand(wDeviceID, MCI_STOP, 0, (DWORD)NULL))
        Con_DPrintf("MCI_STOP failed (%i)", dwReturn);

    wasPlaying = false;
    playing = false;
}


void CDAudio_Pause(void)
{
    DWORD				dwReturn;
    MCI_GENERIC_PARMS	mciGenericParms;

    if (!enabled) return;
    if (!playing) return;

    mciGenericParms.dwCallback = (DWORD)mainwindow;

    if (dwReturn = mciSendCommand(wDeviceID, MCI_PAUSE, 0, (DWORD)(LPVOID) &mciGenericParms))
    {
        Con_DPrintf("MCI_PAUSE failed (%i)", dwReturn);
    }
    wasPlaying = playing;
    playing = false;
}


void CDAudio_Resume(void)
{
    DWORD			dwReturn;
    MCI_PLAY_PARMS	mciPlayParms;

    if (!enabled)
        return;

    if (!cdValid)
        return;

    if (!wasPlaying)
        return;

    mciPlayParms.dwFrom = MCI_MAKE_TMSF(playTrack, 0, 0, 0);
    mciPlayParms.dwTo = MCI_MAKE_TMSF(playTrack + 1, 0, 0, 0);
    mciPlayParms.dwCallback = (DWORD)mainwindow;
    dwReturn = mciSendCommand(wDeviceID, MCI_PLAY, MCI_TO | MCI_NOTIFY, (DWORD)(LPVOID) &mciPlayParms);
    if (dwReturn)
    {
        Con_DPrintf("CDAudio: MCI_PLAY failed (%i)\n", dwReturn);
        return;
    }
    playing = true;
}


static void CD_f (void)
{
    char	*command;
    int		ret;
    int		n;

    if (Cmd_Argc() < 2)
        return;

    command = Cmd_Argv (1);

    if (Q_strcasecmp(command, "on") == 0)
    {
        enabled = true;
        return;
    }

    if (Q_strcasecmp(command, "off") == 0)
    {
        if (playing)
            CDAudio_Stop();
        enabled = false;
        return;
    }

    if (Q_strcasecmp(command, "reset") == 0)
    {
        enabled = true;
        if (playing)
            CDAudio_Stop();
        for (n = 0; n < 100; n++)
            remap[n] = n;
        CDAudio_GetAudioDiskInfo();
        return;
    }

    if (Q_strcasecmp(command, "remap") == 0)
    {
        ret = Cmd_Argc() - 2;
        if (ret <= 0)
        {
            for (n = 1; n < 100; n++)
                if (remap[n] != n)
                    Con_Printf("  %u -> %u\n", n, remap[n]);
            return;
        }
        for (n = 1; n <= ret; n++)
            remap[n] = Q_atoi(Cmd_Argv (n+1));
        return;
    }

    if (Q_strcasecmp(command, "close") == 0)
    {
        CDAudio_CloseDoor();
        return;
    }

    if (!cdValid)
    {
        CDAudio_GetAudioDiskInfo();
        if (!cdValid)
        {
            Con_Printf("No CD in player.\n");
            return;
        }
    }

    if (Q_strcasecmp(command, "play") == 0)
    {
        CDAudio_Play((byte)Q_atoi(Cmd_Argv (2)), false);
        return;
    }

    if (Q_strcasecmp(command, "loop") == 0)
    {
        CDAudio_Play((byte)Q_atoi(Cmd_Argv (2)), true);
        return;
    }

    if (Q_strcasecmp(command, "stop") == 0)
    {
        CDAudio_Stop();
        return;
    }

    if (Q_strcasecmp(command, "pause") == 0)
    {
        CDAudio_Pause();
        return;
    }

    if (Q_strcasecmp(command, "resume") == 0)
    {
        CDAudio_Resume();
        return;
    }

    if (Q_strcasecmp(command, "eject") == 0)
    {
        if (playing)
            CDAudio_Stop();
        CDAudio_Eject();
        cdValid = false;
        return;
    }

    if (Q_strcasecmp(command, "info") == 0)
    {
        Con_Printf("%u tracks\n", maxTrack);
        if (playing)
            Con_Printf("Currently %s track %u\n", playLooping ? "looping" : "playing", playTrack);
        else if (wasPlaying)
            Con_Printf("Paused %s track %u\n", playLooping ? "looping" : "playing", playTrack);
        Con_Printf("Volume is %f\n", cdvolume);
        return;
    }
}


LONG CDAudio_MessageHandler(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    if (lParam != wDeviceID)
        return 1;

    switch (wParam)
    {
    case MCI_NOTIFY_SUCCESSFUL:
        if (playing)
        {
            playing = false;
            if (playLooping)
                CDAudio_Play(playTrack, true);
        }
        break;

    case MCI_NOTIFY_ABORTED:
    case MCI_NOTIFY_SUPERSEDED:
        break;

    case MCI_NOTIFY_FAILURE:
        Con_DPrintf("MCI_NOTIFY_FAILURE\n");
        CDAudio_Stop ();
        cdValid = false;
        break;

    default:
        Con_DPrintf("Unexpected MM_MCINOTIFY type (%i)\n", wParam);
        return 1;
    }

    return 0;
}


void CDAudio_Update(void)
{
    if (!enabled)
        return;

    if (bgmvolume.value != cdvolume)
    {
        if (cdvolume)
        {
            Cvar_SetValue ("bgmvolume", 0.0);
            cdvolume = bgmvolume.value;
            CDAudio_Pause ();
        }
        else
        {
            Cvar_SetValue ("bgmvolume", 1.0);
            cdvolume = bgmvolume.value;
            CDAudio_Resume ();
        }
    }
}


int CDAudio_Init(void)
{
    DWORD	dwReturn;
    MCI_OPEN_PARMS	mciOpenParms;
    MCI_SET_PARMS	mciSetParms;
    int				n;

    if (cls.state == ca_dedicated)
        return -1;

    if (COM_CheckParm("-nocdaudio"))
        return -1;

    mciOpenParms.lpstrDeviceType = "cdaudio";

    if (dwReturn = mciSendCommand(0, MCI_OPEN, MCI_OPEN_TYPE | MCI_OPEN_SHAREABLE, (DWORD) (LPVOID) &mciOpenParms))
    {
        Con_Printf("CDAudio_Init: MCI_OPEN failed (%i)\n", dwReturn);
        return -1;
    }
    wDeviceID = mciOpenParms.wDeviceID;

    // Set the time format to track/minute/second/frame (TMSF).
    mciSetParms.dwTimeFormat = MCI_FORMAT_TMSF;

    if (dwReturn = mciSendCommand(wDeviceID, MCI_SET, MCI_SET_TIME_FORMAT, (DWORD)(LPVOID) &mciSetParms))
    {
        Con_Printf("MCI_SET_TIME_FORMAT failed (%i)\n", dwReturn);
        mciSendCommand(wDeviceID, MCI_CLOSE, 0, (DWORD)NULL);
        return -1;
    }

    for (n = 0; n < 100; n++)
    {
        remap[n] = n;
    }
    initialized = true;
    enabled = true;

    if (CDAudio_GetAudioDiskInfo())
    {
        Con_Printf("CDAudio_Init: No CD in player.\n");
        cdValid = false;
    }
    Cmd_AddCommand ("cd", CD_f);

    Con_Printf("CD Audio Initialized\n");

    return 0;
}


void CDAudio_Shutdown(void)
{
    if (!initialized)
        return;
    CDAudio_Stop();
    if (mciSendCommand(wDeviceID, MCI_CLOSE, MCI_WAIT, (DWORD)NULL))
        Con_DPrintf("CDAudio_Shutdown: MCI_CLOSE failed\n");
}
